From 3267f24e11b9392be0d8257c3eaacfe216f86dbe Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=EC=A0=95=ED=98=84=EC=A1=B0?= Date: Wed, 11 Sep 2024 13:43:14 +0900 Subject: [PATCH] =?UTF-8?q?Feat:=20=EB=AA=A8=ED=82=B9=EC=9A=A9=20=EC=84=9C?= =?UTF-8?q?=EB=B9=84=EC=8A=A4=EC=9B=8C=EC=BB=A4=20=EC=B6=94=EA=B0=80?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- frontend/public/mockServiceWorker.js | 284 +++++++++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 frontend/public/mockServiceWorker.js diff --git a/frontend/public/mockServiceWorker.js b/frontend/public/mockServiceWorker.js new file mode 100644 index 0000000..0b1805f --- /dev/null +++ b/frontend/public/mockServiceWorker.js @@ -0,0 +1,284 @@ +/* eslint-disable */ +/* tslint:disable */ + +/** + * Mock Service Worker. + * @see https://github.com/mswjs/msw + * - Please do NOT modify this file. + * - Please do NOT serve this file on production. + */ + +const PACKAGE_VERSION = '2.4.4' +const INTEGRITY_CHECKSUM = '26357c79639bfa20d64c0efca2a87423' +const IS_MOCKED_RESPONSE = Symbol('isMockedResponse') +const activeClientIds = new Set() + +self.addEventListener('install', function () { + self.skipWaiting() +}) + +self.addEventListener('activate', function (event) { + event.waitUntil(self.clients.claim()) +}) + +self.addEventListener('message', async function (event) { + const clientId = event.source.id + + if (!clientId || !self.clients) { + return + } + + const client = await self.clients.get(clientId) + + if (!client) { + return + } + + const allClients = await self.clients.matchAll({ + type: 'window', + }) + + switch (event.data) { + case 'KEEPALIVE_REQUEST': { + sendToClient(client, { + type: 'KEEPALIVE_RESPONSE', + }) + break + } + + case 'INTEGRITY_CHECK_REQUEST': { + sendToClient(client, { + type: 'INTEGRITY_CHECK_RESPONSE', + payload: { + packageVersion: PACKAGE_VERSION, + checksum: INTEGRITY_CHECKSUM, + }, + }) + break + } + + case 'MOCK_ACTIVATE': { + activeClientIds.add(clientId) + + sendToClient(client, { + type: 'MOCKING_ENABLED', + payload: true, + }) + break + } + + case 'MOCK_DEACTIVATE': { + activeClientIds.delete(clientId) + break + } + + case 'CLIENT_CLOSED': { + activeClientIds.delete(clientId) + + const remainingClients = allClients.filter((client) => { + return client.id !== clientId + }) + + // Unregister itself when there are no more clients + if (remainingClients.length === 0) { + self.registration.unregister() + } + + break + } + } +}) + +self.addEventListener('fetch', function (event) { + const { request } = event + + // Bypass navigation requests. + if (request.mode === 'navigate') { + return + } + + // Opening the DevTools triggers the "only-if-cached" request + // that cannot be handled by the worker. Bypass such requests. + if (request.cache === 'only-if-cached' && request.mode !== 'same-origin') { + return + } + + // Bypass all requests when there are no active clients. + // Prevents the self-unregistered worked from handling requests + // after it's been deleted (still remains active until the next reload). + if (activeClientIds.size === 0) { + return + } + + // Generate unique request ID. + const requestId = crypto.randomUUID() + event.respondWith(handleRequest(event, requestId)) +}) + +async function handleRequest(event, requestId) { + const client = await resolveMainClient(event) + const response = await getResponse(event, client, requestId) + + // Send back the response clone for the "response:*" life-cycle events. + // Ensure MSW is active and ready to handle the message, otherwise + // this message will pend indefinitely. + if (client && activeClientIds.has(client.id)) { + ;(async function () { + const responseClone = response.clone() + + sendToClient( + client, + { + type: 'RESPONSE', + payload: { + requestId, + isMockedResponse: IS_MOCKED_RESPONSE in response, + type: responseClone.type, + status: responseClone.status, + statusText: responseClone.statusText, + body: responseClone.body, + headers: Object.fromEntries(responseClone.headers.entries()), + }, + }, + [responseClone.body], + ) + })() + } + + return response +} + +// Resolve the main client for the given event. +// Client that issues a request doesn't necessarily equal the client +// that registered the worker. It's with the latter the worker should +// communicate with during the response resolving phase. +async function resolveMainClient(event) { + const client = await self.clients.get(event.clientId) + + if (client?.frameType === 'top-level') { + return client + } + + const allClients = await self.clients.matchAll({ + type: 'window', + }) + + return allClients + .filter((client) => { + // Get only those clients that are currently visible. + return client.visibilityState === 'visible' + }) + .find((client) => { + // Find the client ID that's recorded in the + // set of clients that have registered the worker. + return activeClientIds.has(client.id) + }) +} + +async function getResponse(event, client, requestId) { + const { request } = event + + // Clone the request because it might've been already used + // (i.e. its body has been read and sent to the client). + const requestClone = request.clone() + + function passthrough() { + const headers = Object.fromEntries(requestClone.headers.entries()) + + // Remove internal MSW request header so the passthrough request + // complies with any potential CORS preflight checks on the server. + // Some servers forbid unknown request headers. + delete headers['x-msw-intention'] + + return fetch(requestClone, { headers }) + } + + // Bypass mocking when the client is not active. + if (!client) { + return passthrough() + } + + // Bypass initial page load requests (i.e. static assets). + // The absence of the immediate/parent client in the map of the active clients + // means that MSW hasn't dispatched the "MOCK_ACTIVATE" event yet + // and is not ready to handle requests. + if (!activeClientIds.has(client.id)) { + return passthrough() + } + + // Notify the client that a request has been intercepted. + const requestBuffer = await request.arrayBuffer() + const clientMessage = await sendToClient( + client, + { + type: 'REQUEST', + payload: { + id: requestId, + url: request.url, + mode: request.mode, + method: request.method, + headers: Object.fromEntries(request.headers.entries()), + cache: request.cache, + credentials: request.credentials, + destination: request.destination, + integrity: request.integrity, + redirect: request.redirect, + referrer: request.referrer, + referrerPolicy: request.referrerPolicy, + body: requestBuffer, + keepalive: request.keepalive, + }, + }, + [requestBuffer], + ) + + switch (clientMessage.type) { + case 'MOCK_RESPONSE': { + return respondWithMock(clientMessage.data) + } + + case 'PASSTHROUGH': { + return passthrough() + } + } + + return passthrough() +} + +function sendToClient(client, message, transferrables = []) { + return new Promise((resolve, reject) => { + const channel = new MessageChannel() + + channel.port1.onmessage = (event) => { + if (event.data && event.data.error) { + return reject(event.data.error) + } + + resolve(event.data) + } + + client.postMessage( + message, + [channel.port2].concat(transferrables.filter(Boolean)), + ) + }) +} + +async function respondWithMock(response) { + // Setting response status code to 0 is a no-op. + // However, when responding with a "Response.error()", the produced Response + // instance will have status code set to 0. Since it's not possible to create + // a Response instance with status code 0, handle that use-case separately. + if (response.status === 0) { + return Response.error() + } + + const mockedResponse = new Response(response.body, response) + + Reflect.defineProperty(mockedResponse, IS_MOCKED_RESPONSE, { + value: true, + enumerable: true, + }) + + return mockedResponse +}